Narayana, B., and M.R. Gajendragad. “Determination of Mercury Using 4-Amino-3-Mercapto-1,2,4-Triazine(4H)-5-One As an Indirect Masking Reagent ”. Asian Journal of Chemistry, vol. 5, no. 1, Mar. 2010, pp. 121-6, https://asianpubs.org/index.php/ajchem/article/view/24759.